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. 2021 Aug 19;13(16):4167. doi: 10.3390/cancers13164167

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Radioactive I-125 seed placement. Positioning of an iodine-125-radiolabelled (I-125) seed in an axillary lymph node. (a) Equipment. (b) The tip of an 18-G needle is occluded with sterile bone wax and the I-125 seed is placed in the needle. (c) The needle is inserted through a skin incision. (d) The lymph node (hypoechoic) is visualized by ultrasonography and the tip of the needle (arrow) is inserted in the lymph node. (e) The I-125 seed (arrow) is moved through the bone wax and into the lymph node using a stylet. From Straver et al. [44]. Marking the axilla with radioactive iodine seeds (MARI procedure) may reduce the need for axillary dissection after neoadjuvant chemotherapy for breast cancer. Br. J. Surg. 2010, 97, 1226–1231 (Copyright obtained from Rightslink Copyright Clearance Center under license number 5022600645561).